<template>
  <div class="login_container">
    <!-- 头像框区域 -->
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" />
      </div>

      <!-- 表单区域 -->
      <el-form
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="el-icon-user-solid" v-model="loginForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="el-icon-lock"
            v-model="loginForm.password"
            placeholder="请输入密码"
            show-password
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      loginForm: {  
        username: "admin",
        password: "123456"
      },
      loginFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 20, message: "长度在 3 到 20 个字符", trigger: "blur" }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在 3 到 5 个字符", trigger: "blur" }
        ]
      }
    };
  },
  methods:{
    resetLoginForm(){
      this.$refs.loginFormRef.resetFields();
    },
    login(){
      this.$refs.loginFormRef.validate(async valid=>{
        // console.log(valid);
        const {data:res} = await this.$http.post("login",this.loginForm);
        // console.log(res);
        if(res.meta.status!=200){
          return this.$message({
            message:"登录失败，请检查用户名和密码",
            type:"error"
          })
        }
        this.$message({
          message:"登录成功",
          type:"success"
        })
        // token 保存在sessionStorage中，并跳转路由
        window.sessionStorage.setItem("token",res.data.token);
        this.$router.push("/home");
      })
    }
  }
};
</script>

<style lang="less" scoped>
.login_container {
  height: 100%;
  background-color: #2b4b6b;
}
// 登录框
.login_box {
  position: absolute;
  width: 450px;
  height: 350px;
  background-color: #fff;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 3px;
  // 头像框
  .avatar_box {
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 10px;
    height: 130px;

    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    box-shadow: 0 0 10px #ddd;
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  padding: 0 20px;
  box-sizing: border-box;
  width: 100%;
  bottom: 0px;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>